The Regge limit of scattering amplitudes has been the subject of many theoretical as well as phenomenological studies. As \(s/|t| \rightarrow \infty \) , scattering amplitudes exhibit logarithmic divergences which can be resummed to all orders at leading logarithmic (LL) [1]}, [2]}, [3]}, [4]} and next-to-leading logarithmic (NLL) accuracy [5]}, [6]}, [7]}, [8]} in \(\log (s/|t|)\) . This is of great phenomenological interest, as fixed-order calculations in the coupling constant will generally diverge in the forward-scattering limit, which makes it difficult to predict the behaviour of scattered particles close to the beam line. Resumming the large logarithms which appear in this limit allows one to improve the description of the inter-jet activity in events at the Large Hadron Collider (LHC) where large rapidity intervals are spanned [9]}, [10]}, [11]}, [12]}, [13]}, [14]}, [15]}. Furthermore, in the last decade the study of the Regge limit has deepened after realising that it is a useful kinematic constraint for QCD and \({\cal N}=4\)  super Yang-Mills (SYM) amplitudes in
bulk kinematics, and that in the Regge limit
amplitudes in \({\cal N}=4\)  SYM [16]}, [17]}, [18]}
and amplitudes [19]} and cross sections [20]}, [21]} in QCD are endowed with a rich mathematical structure.
